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L-Theanine is an amino acid that is not commonly obtained through dietary sources. It is structurally similar to the neurotransmitters GABA and glutamate, and acts in a similar manner in the brain following oral ingestion.
L-Theanine has been found to support feelings of relaxation without causing sedation. It also supports healthy stress levels and attention span. These properties make it ideal for combining with caffeine as a way to attenuate the jitteriness some people experience from it. The combination of L-Theanine and Caffeine, for example, has been shown to support cognitive functions such as memory, focus, energy, and problem solving ability.
The typically recommended dosage of L-Theanine is 100 – 200 mg, although when combined with Caffeine a dosage of 200 mg is more common. There is evidence that exceeding a dosage of 200 mg has little additional benefit, as when more than 200 mg is taken the excess is used by the body as a raw material for protein production.
While the standard 200 mg dosage can be exceeded without much risk of adverse side effects, it is generally a waste of money and is not recommended.
L-Theanine is very well tolerated by the body and is not toxic. Adverse side effects are rare, but include headaches, dizziness, and mild gastrointestinal discomfort.
One other potential side effect of L-Theanine is a temporary reduction in blood pressure. While this is normally a beneficial side effect, caution should be used when combining L-Theanine with prescription medications that also reduce blood pressure. Please consult your physician before taking L-Theanine.
L-Theanine - $ 18.95 (120 x 200 mg capsules)
Unfortunately we can't accept credit card payments from non-US credit cards through doublewoodsupplements.com, but we've been working hard to make our products available in Canada and have a few options for Canadians to order.
Many of our products are available to purchase on Amazon.ca, and are currently warehoused in Canada. If the products you're looking for are on Amazon.ca, this will be the easiest and quickest way to order.
Send us an email at firstname.lastname@example.org with what you'd like to order, and we will send over an invoice from another of our websites that can take international credit card payments. Once the invoice is paid we will ship out your order promptly.